/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.linkis.manager.label.entity;

/** Identify the characters of label */
public enum Feature {
    /** Key Feature */
    CORE(2.0f, true),
    /** Suitable Feature */
    SUITABLE(1.0f, true),
    /** Priority Feature */
    PRIORITIZED(0.8f, false),
    /** Option Feature/Addition Feature */
    OPTIONAL(0.5f, false),
    /** UNKNOWN */
    UNKNOWN(0.3f, false);
    /** Boost value, used in scoring function */
    private float boost;

    /** If the feature is necessary when scoring */
    private boolean necessary;

    Feature(float boost, boolean necessary) {
        this.boost = boost;
        this.necessary = necessary;
    }

    public float getBoost() {
        return boost;
    }

    public boolean isNecessary() {
        return necessary;
    }
}
